rules.mk

   1 #
   2 # Copyright (C) 2006-2010 OpenWrt.org
   3 # Copyright (C) 2016 LEDE Project
   4 #
   5 # This is free software, licensed under the GNU General Public License v2.
   6 # See /LICENSE for more information.
   7 #
   8
   9 ifneq ($(__rules_inc),1)
  10 __rules_inc=1
  11
  12 ifeq ($(DUMP),)
  13   -include $(TOPDIR)/.config
  14 endif
  15 include $(TOPDIR)/include/debug.mk
  16 include $(TOPDIR)/include/verbose.mk
  17
  18 ifneq ($(filter check,$(MAKECMDGOALS)),)
  19 CHECK:=1
  20 DUMP:=1
  21 endif
  22
  23 export TMP_DIR:=$(TOPDIR)/tmp
  24
  25 qstrip=$(strip $(subst ",,$(1)))
  26 #"))
  27
  28 empty:=
  29 space:= $(empty) $(empty)
  30 comma:=,
  31 merge=$(subst $(space),,$(1))
  32 confvar=$(call merge,$(foreach v,$(1),$(if $($(v)),y,n)))
  33 strip_last=$(patsubst %.$(lastword $(subst .,$(space),$(1))),%,$(1))
  34
  35 paren_left = (
  36 paren_right = )
  37 chars_lower = a b c d e f g h i j k l m n o p q r s t u v w x y z
  38 chars_upper = A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
  39
  40 define sep
  41
  42 endef
  43
  44 define newline
  45
  46
  47 endef
  48
  49 __tr_list = $(join $(join $(1),$(foreach char,$(1),$(comma))),$(2))
  50 __tr_head_stripped = $(subst $(space),,$(foreach cv,$(call __tr_list,$(1),$(2)),$$$(paren_left)subst$(cv)$(comma)))
  51 __tr_head = $(subst $(paren_left)subst,$(paren_left)subst$(space),$(__tr_head_stripped))
  52 __tr_tail = $(subst $(space),,$(foreach cv,$(1),$(paren_right)))
  53 __tr_template = $(__tr_head)$$(1)$(__tr_tail)
  54
  55 $(eval toupper = $(call __tr_template,$(chars_lower),$(chars_upper)))
  56 $(eval tolower = $(call __tr_template,$(chars_upper),$(chars_lower)))
  57
  58 version_abbrev = $(if $(if $(CHECK),,$(DUMP)),$(1),$(shell printf '%.8s' $(1)))
  59
  60 _SINGLE=export MAKEFLAGS=$(space);
  61 CFLAGS:=
  62 ARCH:=$(subst i486,i386,$(subst i586,i386,$(subst i686,i386,$(call qstrip,$(CONFIG_ARCH)))))
  63 ARCH_PACKAGES:=$(call qstrip,$(CONFIG_TARGET_ARCH_PACKAGES))
  64 BOARD:=$(call qstrip,$(CONFIG_TARGET_BOARD))
  65 SUBTARGET:=$(call qstrip,$(CONFIG_TARGET_SUBTARGET))
  66 TARGET_OPTIMIZATION:=$(call qstrip,$(CONFIG_TARGET_OPTIMIZATION))
  67 export EXTRA_OPTIMIZATION:=$(filter-out -fno-plt,$(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION)))
  68 TARGET_SUFFIX=$(call qstrip,$(CONFIG_TARGET_SUFFIX))
  69 BUILD_SUFFIX:=$(call qstrip,$(CONFIG_BUILD_SUFFIX))
  70 SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
  71 BUILD_SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
  72 export SHELL:=/usr/bin/env bash
  73
  74 IS_PACKAGE_BUILD := $(if $(filter package/%,$(BUILD_SUBDIR)),1)
  75
  76 OPTIMIZE_FOR_CPU=$(subst i386,i486,$(ARCH))
  77
  78 ifeq ($(ARCH),powerpc)
  79   FPIC:=-fPIC
  80 else
  81   FPIC:=-fpic
  82 endif
  83
  84 HOST_FPIC:=-fPIC
  85
  86 ARCH_SUFFIX:=$(call qstrip,$(CONFIG_CPU_TYPE))
  87 GCC_ARCH:=
  88
  89 ifneq ($(ARCH_SUFFIX),)
  90   ARCH_SUFFIX:=_$(ARCH_SUFFIX)
  91 endif
  92 ifneq ($(filter -march=armv%,$(TARGET_OPTIMIZATION)),)
  93   GCC_ARCH:=$(patsubst -march=%,%,$(filter -march=armv%,$(TARGET_OPTIMIZATION)))
  94 endif
  95 ifdef CONFIG_HAS_SPE_FPU
  96   TARGET_SUFFIX:=$(TARGET_SUFFIX)spe
  97 endif
  98 ifdef CONFIG_MIPS64_ABI
  99   ifneq ($(CONFIG_MIPS64_ABI_O32),y)
 100      ARCH_SUFFIX:=$(ARCH_SUFFIX)_$(call qstrip,$(CONFIG_MIPS64_ABI))
 101   endif
 102 endif
 103
 104 DEFAULT_SUBDIR_TARGETS:=clean download prepare compile update refresh prereq dist distcheck configure check check-depends
 105
 106 define DefaultTargets
 107 $(foreach t,$(DEFAULT_SUBDIR_TARGETS) $(1),
 108   .$(t):
 109   $(t): .$(t)
 110   .PHONY: $(t) .$(t)
 111 )
 112 endef
 113
 114 DL_DIR:=$(if $(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(TOPDIR)/dl)
 115 OUTPUT_DIR:=$(if $(call qstrip,$(CONFIG_BINARY_FOLDER)),$(call qstrip,$(CONFIG_BINARY_FOLDER)),$(TOPDIR)/bin)
 116 BIN_DIR:=$(OUTPUT_DIR)/targets/$(BOARD)/$(SUBTARGET)
 117 INCLUDE_DIR:=$(TOPDIR)/include
 118 SCRIPT_DIR:=$(TOPDIR)/scripts
 119 BUILD_DIR_BASE:=$(TOPDIR)/build_dir
 120 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
 121   GCCV:=$(call qstrip,$(CONFIG_GCC_VERSION))
 122   LIBC:=$(call qstrip,$(CONFIG_LIBC))
 123   REAL_GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))
 124   GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux
 125   DIR_SUFFIX:=_$(LIBC)$(if $(CONFIG_arm),_eabi)
 126   BIN_DIR:=$(BIN_DIR)$(if $(CONFIG_USE_MUSL),,-$(LIBC))
 127   TARGET_DIR_NAME = target-$(ARCH)$(ARCH_SUFFIX)$(DIR_SUFFIX)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
 128   TOOLCHAIN_DIR_NAME = toolchain-$(ARCH)$(ARCH_SUFFIX)_gcc-$(GCCV)$(DIR_SUFFIX)
 129 else
 130   ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
 131     GNU_TARGET_NAME=$(call qstrip,$(CONFIG_TARGET_NAME))
 132   else
 133     GNU_TARGET_NAME=$(shell gcc -dumpmachine)
 134   endif
 135   REAL_GNU_TARGET_NAME=$(GNU_TARGET_NAME)
 136   LIBC:=$(call qstrip,$(CONFIG_LIBC))
 137   TARGET_DIR_NAME:=target-$(GNU_TARGET_NAME)_$(LIBC)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
 138   TOOLCHAIN_DIR_NAME:=toolchain-$(GNU_TARGET_NAME)
 139 endif
 140
 141 ifeq ($(or $(CONFIG_EXTERNAL_TOOLCHAIN),$(CONFIG_GCC_VERSION_4_8),$(CONFIG_TARGET_uml)),)
 142   iremap = -iremap $(1):$(2)
 143 endif
 144
 145 PACKAGE_DIR:=$(BIN_DIR)/packages
 146 BUILD_DIR:=$(BUILD_DIR_BASE)/$(TARGET_DIR_NAME)
 147 STAGING_DIR:=$(TOPDIR)/staging_dir/$(TARGET_DIR_NAME)
 148 BUILD_DIR_TOOLCHAIN:=$(BUILD_DIR_BASE)/$(TOOLCHAIN_DIR_NAME)
 149 TOOLCHAIN_DIR:=$(TOPDIR)/staging_dir/$(TOOLCHAIN_DIR_NAME)
 150 STAMP_DIR:=$(BUILD_DIR)/stamp
 151 STAMP_DIR_HOST=$(BUILD_DIR_HOST)/stamp
 152 TARGET_ROOTFS_DIR?=$(if $(call qstrip,$(CONFIG_TARGET_ROOTFS_DIR)),$(call qstrip,$(CONFIG_TARGET_ROOTFS_DIR)),$(BUILD_DIR))
 153 TARGET_DIR:=$(TARGET_ROOTFS_DIR)/root-$(BOARD)
 154 STAGING_DIR_ROOT:=$(STAGING_DIR)/root-$(BOARD)
 155 STAGING_DIR_IMAGE:=$(STAGING_DIR)/image
 156 BUILD_LOG_DIR:=$(TOPDIR)/logs
 157 PKG_INFO_DIR := $(STAGING_DIR)/pkginfo
 158
 159 BUILD_DIR_HOST:=$(if $(IS_PACKAGE_BUILD),$(BUILD_DIR_BASE)/hostpkg,$(BUILD_DIR_BASE)/host)
 160 STAGING_DIR_HOST:=$(TOPDIR)/staging_dir/host
 161 STAGING_DIR_HOSTPKG:=$(TOPDIR)/staging_dir/hostpkg
 162
 163 TARGET_PATH:=$(subst $(space),:,$(filter-out .,$(filter-out ./,$(subst :,$(space),$(PATH)))))
 164 TARGET_INIT_PATH:=$(call qstrip,$(CONFIG_TARGET_INIT_PATH))
 165 TARGET_INIT_PATH:=$(if $(TARGET_INIT_PATH),$(TARGET_INIT_PATH),/usr/sbin:/sbin:/usr/bin:/bin)
 166 TARGET_CFLAGS:=$(TARGET_OPTIMIZATION)$(if $(CONFIG_DEBUG), -g3) $(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION))
 167 TARGET_CXXFLAGS = $(TARGET_CFLAGS)
 168 TARGET_ASFLAGS_DEFAULT = $(TARGET_CFLAGS)
 169 TARGET_ASFLAGS = $(TARGET_ASFLAGS_DEFAULT)
 170 TARGET_CPPFLAGS:=-I$(STAGING_DIR)/usr/include -I$(STAGING_DIR)/include
 171 TARGET_LDFLAGS:=-L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib
 172 ifneq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
 173 LIBGCC_S_PATH=$(realpath $(wildcard $(call qstrip,$(CONFIG_LIBGCC_ROOT_DIR))/$(call qstrip,$(CONFIG_LIBGCC_FILE_SPEC))))
 174 LIBGCC_S=$(if $(LIBGCC_S_PATH),-L$(dir $(LIBGCC_S_PATH)) -lgcc_s)
 175 LIBGCC_A=$(realpath $(lastword $(wildcard $(dir $(LIBGCC_S_PATH))/gcc/*/*/libgcc.a)))
 176 else
 177 LIBGCC_A=$(lastword $(wildcard $(TOOLCHAIN_DIR)/lib/gcc/*/*/libgcc.a))
 178 LIBGCC_S=$(if $(wildcard $(TOOLCHAIN_DIR)/lib/libgcc_s.so),-L$(TOOLCHAIN_DIR)/lib -lgcc_s,$(LIBGCC_A))
 179 endif
 180 LIBRPC=-lrpc
 181 LIBRPC_DEPENDS=+librpc
 182
 183 ifeq ($(CONFIG_ARCH_64BIT),y)
 184   LIB_SUFFIX:=64
 185 endif
 186
 187 ifndef DUMP
 188   ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
 189     -include $(TOOLCHAIN_DIR)/info.mk
 190     export GCC_HONOUR_COPTS:=0
 191     TARGET_CROSS:=$(if $(TARGET_CROSS),$(TARGET_CROSS),$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))-)
 192     TARGET_CFLAGS+= -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result
 193     TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/usr/include
 194     ifeq ($(CONFIG_USE_MUSL),y)
 195       TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/include/fortify
 196     endif
 197     TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/include
 198     TARGET_LDFLAGS+= -L$(TOOLCHAIN_DIR)/usr/lib -L$(TOOLCHAIN_DIR)/lib
 199     TARGET_PATH:=$(TOOLCHAIN_DIR)/bin:$(TARGET_PATH)
 200   else
 201     ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
 202       TARGET_CROSS:=$(call qstrip,$(CONFIG_TOOLCHAIN_PREFIX))
 203       TOOLCHAIN_ROOT_DIR:=$(call qstrip,$(CONFIG_TOOLCHAIN_ROOT))
 204       TOOLCHAIN_BIN_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_BIN_PATH)))
 205       TOOLCHAIN_INC_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_INC_PATH)))
 206       TOOLCHAIN_LIB_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_LIB_PATH)))
 207       ifneq ($(TOOLCHAIN_BIN_DIRS),)
 208         TARGET_PATH:=$(subst $(space),:,$(TOOLCHAIN_BIN_DIRS)):$(TARGET_PATH)
 209       endif
 210       ifneq ($(TOOLCHAIN_INC_DIRS),)
 211         TARGET_CPPFLAGS+= $(patsubst %,-I%,$(TOOLCHAIN_INC_DIRS))
 212       endif
 213       ifneq ($(TOOLCHAIN_LIB_DIRS),)
 214         TARGET_LDFLAGS+= $(patsubst %,-L%,$(TOOLCHAIN_LIB_DIRS))
 215       endif
 216       TARGET_PATH:=$(TOOLCHAIN_DIR)/bin:$(TARGET_PATH)
 217     endif
 218   endif
 219 endif
 220 TARGET_PATH_PKG:=$(STAGING_DIR)/host/bin:$(STAGING_DIR_HOSTPKG)/bin:$(TARGET_PATH)
 221
 222 ifeq ($(CONFIG_SOFT_FLOAT),y)
 223   SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft
 224   ifeq ($(CONFIG_arm),y)
 225     TARGET_CFLAGS+= -mfloat-abi=soft
 226   else
 227     TARGET_CFLAGS+= -msoft-float
 228   endif
 229 else
 230   SOFT_FLOAT_CONFIG_OPTION:=
 231   ifeq ($(CONFIG_arm),y)
 232     TARGET_CFLAGS+= -mfloat-abi=hard
 233   endif
 234 endif
 235
 236 export PATH:=$(TARGET_PATH)
 237 export STAGING_DIR STAGING_DIR_HOST STAGING_DIR_HOSTPKG
 238 export SH_FUNC:=. $(INCLUDE_DIR)/shell.sh;
 239
 240 PKG_CONFIG:=$(STAGING_DIR_HOST)/bin/pkg-config
 241
 242 export PKG_CONFIG
 243
 244 HOSTCC:=gcc
 245 HOSTCXX:=g++
 246 HOST_CPPFLAGS:=-I$(STAGING_DIR_HOST)/include -I$(STAGING_DIR_HOST)/usr/include $(if $(IS_PACKAGE_BUILD),-I$(STAGING_DIR_HOSTPKG)/include -I$(STAGING_DIR)/host/include)
 247 HOST_CFLAGS:=-O2 $(HOST_CPPFLAGS)
 248 HOST_LDFLAGS:=-L$(STAGING_DIR_HOST)/lib -L$(STAGING_DIR_HOST)/usr/lib $(if $(IS_PACKAGE_BUILD),-L$(STAGING_DIR_HOSTPKG)/lib -L$(STAGING_DIR)/host/lib)
 249
 250 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
 251   TARGET_AR:=$(TARGET_CROSS)gcc-ar
 252   TARGET_RANLIB:=$(TARGET_CROSS)gcc-ranlib
 253   TARGET_NM:=$(TARGET_CROSS)gcc-nm
 254 else
 255   TARGET_AR:=$(TARGET_CROSS)ar
 256   TARGET_RANLIB:=$(TARGET_CROSS)ranlib
 257   TARGET_NM:=$(TARGET_CROSS)nm
 258 endif
 259
 260 BUILD_KEY=$(TOPDIR)/key-build
 261
 262 TARGET_CC:=$(TARGET_CROSS)gcc
 263 TARGET_CXX:=$(TARGET_CROSS)g++
 264 KPATCH:=$(SCRIPT_DIR)/patch-kernel.sh
 265 SED:=$(STAGING_DIR_HOST)/bin/sed -i -e
 266 CP:=cp -fpR
 267 LN:=ln -sf
 268 XARGS:=xargs -r
 269
 270 BASH:=bash
 271 TAR:=tar
 272 FIND:=find
 273 PATCH:=patch
 274 PYTHON:=python
 275
 276 INSTALL_BIN:=install -m0755
 277 INSTALL_DIR:=install -d -m0755
 278 INSTALL_DATA:=install -m0644
 279 INSTALL_CONF:=install -m0600
 280
 281 TARGET_CC_NOCACHE:=$(TARGET_CC)
 282 TARGET_CXX_NOCACHE:=$(TARGET_CXX)
 283 HOSTCC_NOCACHE:=$(HOSTCC)
 284 HOSTCXX_NOCACHE:=$(HOSTCXX)
 285 export TARGET_CC_NOCACHE
 286 export TARGET_CXX_NOCACHE
 287 export HOSTCC_NOCACHE
 288
 289 ifneq ($(CONFIG_CCACHE),)
 290   TARGET_CC:= ccache_cc
 291   TARGET_CXX:= ccache_cxx
 292   HOSTCC:= ccache $(HOSTCC)
 293   HOSTCXX:= ccache $(HOSTCXX)
 294 endif
 295
 296 TARGET_CONFIGURE_OPTS = \
 297   AR="$(TARGET_AR)" \
 298   AS="$(TARGET_CC) -c $(TARGET_ASFLAGS)" \
 299   LD=$(TARGET_CROSS)ld \
 300   NM="$(TARGET_NM)" \
 301   CC="$(TARGET_CC)" \
 302   GCC="$(TARGET_CC)" \
 303   CXX="$(TARGET_CXX)" \
 304   RANLIB="$(TARGET_RANLIB)" \
 305   STRIP=$(TARGET_CROSS)strip \
 306   OBJCOPY=$(TARGET_CROSS)objcopy \
 307   OBJDUMP=$(TARGET_CROSS)objdump \
 308   SIZE=$(TARGET_CROSS)size
 309
 310 # strip an entire directory
 311 ifneq ($(CONFIG_NO_STRIP),)
 312   RSTRIP:=:
 313   STRIP:=:
 314 else
 315   ifneq ($(CONFIG_USE_STRIP),)
 316     STRIP:=$(TARGET_CROSS)strip $(call qstrip,$(CONFIG_STRIP_ARGS))
 317   else
 318     ifneq ($(CONFIG_USE_SSTRIP),)
 319       STRIP:=$(STAGING_DIR_HOST)/bin/sstrip
 320     endif
 321   endif
 322   RSTRIP= \
 323     export CROSS="$(TARGET_CROSS)" \
 324                 $(if $(PKG_BUILD_ID),KEEP_BUILD_ID=1) \
 325                 $(if $(CONFIG_KERNEL_KALLSYMS),NO_RENAME=1) \
 326                 $(if $(CONFIG_KERNEL_PROFILING),KEEP_SYMBOLS=1); \
 327     NM="$(TARGET_CROSS)nm" \
 328     STRIP="$(STRIP)" \
 329     STRIP_KMOD="$(SCRIPT_DIR)/strip-kmod.sh" \
 330     PATCHELF="$(STAGING_DIR_HOST)/bin/patchelf" \
 331     $(SCRIPT_DIR)/rstrip.sh
 332 endif
 333
 334 ifeq ($(CONFIG_IPV6),y)
 335   DISABLE_IPV6:=
 336 else
 337   DISABLE_IPV6:=--disable-ipv6
 338 endif
 339
 340 TAR_OPTIONS:=-xf -
 341
 342 ifeq ($(CONFIG_BUILD_LOG),y)
 343   BUILD_LOG:=1
 344 endif
 345
 346 export BISON_PKGDATADIR:=$(STAGING_DIR_HOST)/share/bison
 347 export M4:=$(STAGING_DIR_HOST)/bin/m4
 348
 349 define shvar
 350 V_$(subst .,_,$(subst -,_,$(subst /,_,$(1))))
 351 endef
 352
 353 define shexport
 354 export $(call shvar,$(1))=$$(call $(1))
 355 endef
 356
 357 define include_mk
 358 $(eval -include $(if $(DUMP),,$(STAGING_DIR)/mk/$(strip $(1))))
 359 endef
 360
 361 # Execute commands under flock
 362 # $(1) => The shell expression.
 363 # $(2) => The lock name. If not given, the global lock will be used.
 364 ifneq ($(wildcard $(STAGING_DIR_HOST)/bin/flock),)
 365   define locked
 366         SHELL= \
 367         flock \
 368                 $(TMP_DIR)/.$(if $(2),$(strip $(2)),global).flock \
 369                 -c '$(subst ','\'',$(1))'
 370   endef
 371 else
 372   locked=$(1)
 373 endif
 374
 375 # Recursively copy paths into another directory, purge dangling
 376 # symlinks before.
 377 # $(1) => File glob expression
 378 # $(2) => Destination directory
 379 define file_copy
 380         for src_dir in $(sort $(foreach d,$(wildcard $(1)),$(dir $(d)))); do \
 381                 ( cd $$src_dir; find -type f -or -type d ) | \
 382                         ( cd $(2); while :; do \
 383                                 read FILE; \
 384                                 [ -z "$$FILE" ] && break; \
 385                                 [ -L "$$FILE" ] || continue; \
 386                                 echo "Removing symlink $(2)/$$FILE"; \
 387                                 rm -f "$$FILE"; \
 388                         done; ); \
 389         done; \
 390         $(CP) $(1) $(2)
 391 endef
 392
 393 # Calculate sha256sum of any plain file within a given directory
 394 # $(1) => Input directory
 395 define sha256sums
 396         (cd $(1); find . -maxdepth 1 -type f -not -name 'sha256sums' -printf "%P\n" | sort | \
 397                 xargs -r $(STAGING_DIR_HOST)/bin/mkhash -n sha256 | sed -ne 's!^\(.*\) \(.*\)$$!\1 *\2!p' > sha256sums)
 398 endef
 399
 400 # file extension
 401 ext=$(word $(words $(subst ., ,$(1))),$(subst ., ,$(1)))
 402
 403 all:
 404 FORCE: ;
 405 .PHONY: FORCE
 406
 407 check: FORCE
 408         @true
 409
 410 val.%:
 411         @$(if $(filter undefined,$(origin $*)),\
 412                 echo "$* undefined" >&2, \
 413                 echo '$(subst ','"'"',$($*))' \
 414         )
 415
 416 var.%:
 417         @$(if $(filter undefined,$(origin $*)),\
 418                 echo "$* undefined" >&2, \
 419                 echo "$*='"'$(subst ','"'\"'\"'"',$($*))'"'" \
 420         )
 421
 422 endif #__rules_inc